Carbon-holder for arc-lamps.



W. N. BBLIG. non 19mm ro; no wm.

' LPPLIUIOI "LID lll. Il, 1010.

984,496. msnm m 14. 19u.

Aiii

I l carbon tinuly without danger of cracking-.ir

' ing block l0 ma 'be moved. The clamping block iii prefera ly provided with a piiir ot A outer ein] ot the c ampia block in preter- UNITED STATES. PATENT OFFICE WILLIAI N. IILIG, 0l CHIOAOO, ILLINOIS. ASBIGNOR. T0 THB IELIG POLYICOI IOIPANY, 0l' CHICAGO, n.LlNol. A CORPORATION Ol ILLINOIS.

CAIBON-HOLDER FOR ARC-LANPB.

lpecteatten ot Lettera latent.

Patented Feb. 14, 1911-.

original applliiattea tied April 20. 1M, lertal tto. 491.014. Dtvtdeil and tlita appltcatten Il february l1.

i910. Serial No. 543.309.

'."u all whom i't muy concern.

lie it known that l, \\"|i.i.i.\\i Sizun.; citizen of the l'niteil States, residing at tliicago. in tlie4 county of tool. and Stute 4of ful liupioveuieiit in tai'hon-llohlers for Arc-Lampe, of which the following in a` specilication. f

'l`hia iii a divisional application of which the original was Seria No. 491,024, tiled .ipril eo, waa.4 r i 'll s invention relate to u novel ,and 'inproved earhon holder for arc linups; and ias for its Aobject to provide iacans for adiatst.- i ably holding the carbono; uieiuiii for facilia tating tlieiualting of electrical coi`inect-iou.- with the carbone; means for holding the i chipping; and in other ways to provide an im iroved carbon holder.

n the drawing, Figure 1 is u plan view of inyimprov carbon holder showing hy dotted linen a carbon pencil clamped in place; Fig. 2, an elevation ot the device in section, showing the clam block at its iunerinoat poaitioi. and ig. 3, an enlarged penipectiva of, the chiiupin bloc r In the gurea, a o laiiip ng bracket 4 .is formed eo aii to provide at one end a pairl of aide welle and 0 connected by a roundcd croea wall 7 and a back cross wall 8, so an to form an opening t) in which a chimpalidea 11 and l2 adapted to rest on the slide walls 5 and ti. The inner end 18 of the clamping block is preferably curved in the forni of iin arc, ao that tho end 13 and tho rounded erom wall l will conform, in a. eaeral way, to the ahiipe of ii carbon penci I4, which iuiiybe clain between them. The

ably provided with a recess 15 for receiving the end of a clam in acrew 18 which paaaes through a hole ly in crotte wall 8.

'llie chimpin bracket 4 ia provided on one sido with an e cctric termin 18, anden ite other aide with an eh '.tricterininal l0. Tho terminal lt) may he drilled and threaded iio as to receive the clampinhacrew 16, aa ahown iii Figa. 1l and e etid of the clamping.: bracket l is provided on its other end with a pair of lugs ill and 22 adapted to receive between theiu au iirin 23. A thumb .wreu' :tt 'orotlier suitable device inada ted to paas through the luga 21 and 22 am the C0 ui'iu itil. being: threaded at 25 into the Lig 29, und the. tliunili screw is provided with ii boulder .tt for contacting the lug 21, so that as tliithuuih screw is rotated it will tend to i'oneihe lugs 2l and 2*. toward eachother, 66

thereby clamping the arni .3 lietweeii them.

lumilating nicnas as .'T aiul :2H are rovided.

for insulating the lues 2l and 22 rom the aria. and these may i-ie in the form of half spools, so that the thumb screw will also be 70 insulated from the urni 23,# Tlie rovitiion of an electric tei'niiiiul on euch si e of the brac-het iuukes it possible for-tho o rator to iualcc an elect i-iciil connection to t e carbon through the bracket from either aide'lof the 75 lamp, according to convenience, and the iiae of one of the electric terminala aa a. ln through which the clamping arrow ia three# ii'lziliniplilieii the construction of the carbon io er.

rounded cross wall 7 have to he formed in auch an arc, but the shape of these am ma iiup rting the en amplng aonaw; an serves mi a back wall, there ing the carbon block from falling awev from the slide walls in that direction. t will be further iinderiitood 4that. the arin 93 may ho of any aiiitiible forni, and niiiy lic supported in any form' ot device ncceeaary 100 for regulating tlie vertical movements of the clamping braclret aa a whole.

, I lt will. be understood that thc end 18 of the clamping block does not iieccesarilyliavet, I to be cut in the nrc of a circle, nor doel the Il be in 'any suitable manner, so that they wi l the roper 00 bon ieneil te clem rovidaa nieana for l mitl'io cl v prevent 95 I claim: In carbon holding ing l U-ahaped hel cron wall 5 den .de

, a clamping bloclg to rest on the nde wel devices, a bracket hnved includinn onnechtn un ou of the U-lha head and having; rounded sul cerbon contacting lu mounted within the rfaee and elidlbl flhnpebgnlfend :n

adapted to ect in conjunction with the round and wall of nid head for clamping the lo carbon, und n screw for lctunting the clamping block, suhltantllty n deecrbed.

0 WILLIA N. SELIG. Witnesses:

Ham A. Sym', Hm? Gonnon.' 

